Soles for skating boots



March 19, 1968 G. KRAPP 3,373,511

SOLES FOR SKATING BOOTS Filed Oct. 26, 1966 Patented Mar. 19, 1968 3,373,511 SOLES FOR SKATING BOTS Gerhard Krapp, Marktplatz 5, Kups, Germany Filed Oct. 26, 1966, Ser. No. 589,602 Claims priority, appliclaltitsii grmany, Nov. 12, 1965,

7 ciertas. (cl. as me) ABSTRACT F THE DiSCLOSURE The present invention relates to the construction of a skating boot which comprises an insole, an upper lasted over the insole, and an outer sole. In skating boots it is conventional to make the outer soles of a substantially rectangular cross section so that the lateral surfaces thereof extend at substantially right angles to the bottom surface of the soles. The projection of the lasted upper upon a support upon which the boot is placed is usually equal to or larger than the projection of the outer sole upon the same support. Consequently, the entire skating boot has a clumsy, unsightly appearance and there is also a danger that, when carrying out a sharp curve, the skater might fall because the lower edge of the outer sole touches the ice and the blade of the sk-ate disengages from the ice or starts to slip laterally over the ice.

It is an object of the present invention to design a skating boot in a manner so as to protect the skater from the danger of slipping laterally when curving along the ice. For attaining this object, the invention provides that the bottom surface of the outer sole of the skating boot is made of a smaller size than the surface facing the upper so that the lateral surfaces of the outer sole will eX- tend at an obtuse angle to the bottom surface. Thus, by cutting away the lateral lower edges of the outer sole, there will be no more lateral projections on the ski boot which might touch the ice and the skater can safely carry out the sharpest curves without fear of falling because his skates might lose contact with the ice. It is further advisable to make the upper side of the front part of the outer sole of a smaller size than the projection of the lasted upper upon a support upon which the outer sole is placed. The best possible shape for attaining the above-mentioned purpose land also for attaining a skating boot of the most pleasing appearance consists in shaping the outer sole so that the extensions of the lines which determine the cross-sectional contour of the front part of the outer sole form tangents on the outer surface of the boot.

The features and advantages of the present invention will become more clearly apparent from the following detailed description thereof which is to be read with reference to the acompanying drawing which shows a cross section of the front part of a skating boot according to the invention.

As illustrated in the drawing, the skating boot according to the invention has an upper 1 which is lasted in a conventional manner over the insole 2 which is preferably designed so that its upper surface which engages upon the last 3 or faces the inside of the boot is larger than its lower surface which faces the outer sole 4 and between which and the outer sole ra filler 5 is provided in a conventional manner. The insole 2 has therefore the cross-sectional shape of a reversed isosceles trapezoid. Although the present invention does not absolutely require the insole to be made of such a trapezoidal cross section, it does require at least the outer sole to be made of a cross-sectional shape substantially like that of a reversed isosceles trapezoid so that the bottom surface of the outer sole will be smaller than the surface thereof facing the upper.

As may also be seen in the drawing, the surface of the front part of the outer sole is likewise smaller than the projection of the lasted upper upon a support 6 on which the boot is placed. The inside of the boot provides sufficient space for the foot and there are practically no unfilled spaces. Therefore, the foot will have a firm fit in the boot even though the bottom of the boot is made extremerly narrow. If the lines which determine the cross-sectional contour of the front part of the outer sole are extended, as indicated by the lines 7, it will be seen that these lines form tangents on the upper 1.

Although my invention has been illustrated and described with reference to the preferred embodiment thereof, I wish to have it understood that it is in no way limited to the details of such embodiment but is capable of numerous modifications within the scope of the appended claims.

Having thus fully disclosed my invention, what I claim is:

1. A skating boot comprising an insole, an upper lasted over said insole and an outer sole, wherein the outer sole has a transverse cross section in the form of a quadrilateral, the bottom surface of said outer sole, forming one side of said quadrilateral, being of smaller dimension than the surface of said outer sole facing said upper.

2. A skating boot according to claim 1, wherein said cross section of said outer sole is in the form of a trapezoid.

3. A skating boot according to claim 1 in which the surface of the front part of said outer sole facing said upper is smaller than the projection of the lasted upper upon a support which the boot is placed.

4. A skating boot according to claim 1, wherein the extensions of the lines determining the outer cross-sectional contour of the front part of said outer sole, forming two opposite sides of said quadrilateral, form tangents to the outer surface of said lasted upper.

5. A skating boot according to claim 2, wherein the extensions of the lines determining the outer cross-sectional contour of the front part of said outer sole, forming two opposite sides of said quadrilateral, form tangents to the outer surfaces of said lasted upper.

6. A skating boot according to claim 1, wherein the surface of said insole facing said outer sole, at least at the front part of said boot, is smaller than the surface of the outer sole facing said upper.

7. A skating boot according to claim 2, wherein the surface of said insole facing said outer sole, at least at the front part of said boot, is smaller than the surface of the outer sole facing said upper.

References Cited UNITED STATES PATENTS 1,889,275 ll/l932 DOmahOski 36-8.3 2,572,050 10/1951 Ornstein 280-11.12 X 2,847,769 8/ 1958 Schlesinger 36-2.5 3,247,537 4/ 1966 Winkler 36-25 X PATRICK D. LAWSON, Primary Examiner. 

